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China has sent its coast guard into the maritime area of the Diaoyu islands and unmanned aerial vehicles past outlying Japanese territory as Beijing ramps up strains over the Japan's leader's comments regarding the island of Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol announced that its vessels carried out a “rights enforcement patrol” through the territorial seas of the Diaoyu islands, which are under the control of Japan but also claimed by Beijing.

“China coast guard vessel 1307 formation conducted patrols within the territorial waters of the Senkaku islands. This was a lawful patrol operation conducted by the China coast guard to uphold its rights and interests,” the statement said.

Diplomatic Spat

Beijing and Tokyo have repeatedly faced off around the disputed territory but the recent developments come amid an escalating political dispute after the Japanese prime minister, the Japanese official, told parliament that if China attack the self-governing island of Taiwan it could trigger a military response from Tokyo.

That sparked an angry response from Beijing, which has indicated it demands a withdrawal from Takaichi.

Taiwan's Position

Beijing asserts the island as its own territory and intends to annex it under what it describes as “unification”. It has not ruled out the military option. The island's administration and citizens categorically refuse the prospect of Chinese rule – preferring to maintain the current situation without explicitly declaring themselves independent, but pledging to protect their sovereignty if necessary.

An attack or invasion by Beijing would risk escalating into a regional or global conflict, possibly drawing in the United States and other allies including Tokyo, which has land just 68 miles from the island.

Defense Operations

In Taiwan, the military authorities said on Sunday morning that it had detected three dozen PLA planes, multiple naval vessels and one government vessel, which was likely the coast guard, operating around the island over the past 24 hours.

Maps provided by the ministry showed up to three drones operating near Taiwan and the Japanese islands off its north-east coast, seeming to travel unusually near to Yonaguni. Chinese military transits there are occasional, but infrequent, and Chinese military activity in Taiwan’s air defence identification zone generally has been low in recent weeks.

Earlier this weekend, the defense officials said Beijing had been carrying out another “combined military exercise” to “harass the airspace and sea around us”. It added Taiwan had dispatched military assets to track the developments. Taiwan reports such Chinese patrols a couple of times a month as part of what the Taiwanese government says is an ongoing military pressure campaign.

Diplomatic Pressure

Tokyo has been experiencing increased strain from China since the Japanese official made her remarks, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Tokyo by stating that “those who interfere will face consequences”.

China then summoned the Japanese ambassador for the first occasion since 2023, and China’s defence ministry declared that any Japanese intervention would be certain to collapse.

Warning for Citizens

On Friday, China cautioned its citizens against travelling to Japan, leading Japan to request China to take “appropriate measures”, though it provided no details.

Three Chinese airlines announced this weekend that flights to Tokyo could be cancelled without penalty.

In another escalation, China’s government on Sunday advised students to rethink education plans in Japan, citing what it characterized as an volatile safety situation.

While the advice does not amount to a ban, a significant decrease in the population of learners from China could have a detrimental effect on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to education statistics. They included more than 123,000 Chinese students – by far the largest demographic.

Media Response

Earlier this weekend, a official press commentary charged the Japanese official with performing a diplomatic maneuver that was “both reckless and fundamentally flawed”.

“A clash between Tokyo and Beijing would not be a small-scale encounter; it would probably involve other nations, including the US, and could quickly spiral into a major confrontation with severe repercussions.”

Policy Standpoints

The government of Taiwan says the island's residents alone determine their destiny. Officials in Tokyo have traditionally refrained from publicly mentioning Taiwan when discussing such scenarios, maintaining a “strategic ambiguity” also preferred by Tokyo’s main security ally, the US.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the mainland China is “inevitable”, and portrays dissent as provocative. As it advances toward potential armed takeover, China has also been escalating its non-military activity and its rhetoric towards the island.